Modeling Directional Brightness Temperature Over Mixed Scenes of Continuous Crop and Road: A Case Study of the Heihe River Basin

被引：22
作者：
Cao, Biao [1 ,2 ]
Liu, Qinhuo [1 ,2 ]
Du, Yongming [1 ,2 ]
Li, Hua [1 ,2 ]
Wang, Heshun [1 ,2 ]
Xiao, Qin [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Directional brightness temperature (DBT); geometric optical model; Heihe Watershed Allied Telemetry Experimental Research (HiWATER); heterogeneous; multiangle; CANOPIES;
D O I：
10.1109/LGRS.2014.2333874
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A new geometric optical model is proposed in this letter to simulate the directional brightness temperature (DBT) distribution over mixed scenes of continuous crop and road. The DBT distributions of the crop and road zones are separately calculated, and the road zone consists of a road and adjacent crop sides. A road distribution polar map is designed to show all of the roads of different lengths, widths, and orientations in the scene. The airborne multiangle data set of the thermal infrared band that was acquired during the Heihe Watershed Allied Telemetry Experimental Research experiment is used for validation. The results demonstrate that the proposed model can simulate the DBT of a heterogeneous scene (90 x 90 m(2)) with a root-mean-square error equal to 1.1 K and good trend similarity.
引用
收藏
页码：234 / 238
页数：5
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